- #1

EddiePhys

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## Homework Statement

A capacitor of capacitance C is charged to a potential difference v from the cell and then disconnected from it. A charge Q is now given to its positive plate. The potential difference across the capacitor is now?

## Homework Equations

## The Attempt at a Solution

V is the potential difference. Charge +Q is given and hence -Q is induced on the negative plate.

The potential difference should be V+Q/C

But the answer is V+Q/2C. Why?